Rename `duration` to `diff` for `Instant` (#100)

* Rename `duration` to `diff` for `Instant`

* Update CHANGELOG.md

Prepare v6.0.0 release (1st PS 0.15.0-compatible release) (#95)

* Update the bower dependencies

* Update Node to 14 in CI

* Update the changelog

Prepare v5.0.0 release (#89)

* Update CI to build with the latest version of the compiler

* Update the bower repository URL to match the URL in the registry

* Upgrade bower dependencies

* Update the changelog

Merge pull request #75 from bouzuya/fix-year-to-enum

fix toEnum

Merge pull request #73 from mschristiansen/enum

Added enum instance for Date and date implementation of adjust

Merge pull request #71 from purescript/compiler/0.12

Updates for PureScript 0.12

Merge pull request #68 from garyb/fix-auto-publish

Fix pursuit auto publishing from Travis

Merge pull request #64 from javcasas/Expose-`fromDate`

Export `fromDate`